17 Leporis — Star in Lepus
Observe
1Physical Properties
Magnitude
4.93
Range
4.82 - 5.06
Period
260 days
Variable Type
Ellipsoidal Variable
Spectral Type
A2eShell
Star Color
White
(B-V 0.24)
Distance
102 ly
2Position & Identifiers
RA
06h 04m 59.1s
Dec
-16° 29' 04.0"
Constellation
Lepus
(Lep)
HR
2148
HIP
28816
HD
41511
SAO
151093
Flamsteed
17 Lep
Variable ID
SS Lep
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium | Medium | Hard+ |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
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Best season
Nov – Jan
(peak: Dec)
5Survey Image
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6
Size Comparison
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8
Spectral Classification
9
Hertzsprung-Russell Diagram
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10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
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14Stellar Notes
Z And 4.82 - 5.06V. H-line var. M-type component irreg. amp. 0.07y. Shell Sp. varies like R CrB.
260.0d, K 21.0k/s, V0 +15.1k/s, asini 74.4. Unresolved by speckle interferometry (1980.02). Probable masses, 1.4 | for M-type star, 4.6 for B-type. The B star subject to outbursts possibly correlated with orbital phase.
Also classified A0Veq + M1III.
Radius 1.5 solar.
15
Light Travel Time Machine
16
Relativistic Travel
Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
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